Description of problem:
When retrieve the build hook URL for a sti-build config in jbt, it always failed with error.

Version-Release number of selected component (if applicable):
openshift v3 plug: 3.0.0.Beta2-v20150609-2129-B831

How reproducible:
Always

Steps to Reproduce:

1.Add a build config from the command line using 'osc' that has a build trigger

2.In eclipse, Open the OpenShift explorer view and expand the project to view the buildconfig

3.In eclipse, Click the buildconfig

4.Verify in the property pane that the build hook url matches what is returned from running the command 'osc describe buildconfig <buildconfigname> -n <projectname>'

Actual results:
4. When open the property pane. It meet error.
error info: An error has occurred. See error log for more details.
No enum constant com.openshift.restclient.model.build.BuildStrategyType.Source

Expected results:
4. Should show the build hook url well.

Additional info: